The mutation "Nautical" encompasses the following mutations: 

• EEL:  A long membrane flowing down the back of the character.
• FINNED: fins that come off the character's body.
• SHARK:  A tail mutation that creates a shark like fins on the character.
• ANGLER:  A singular bulb of light that comes off the face of the character, similar to that found on an angler fish.

Reaver's Essence and Aberrant Status

• EEL/FINNED/SHARK: Does not have any unique rules aside from allowing REAVERS ESSENCE or ABBERANT effects.
• ANGLER: May now originate from other sections of the body and have more than one appear.